Chapter Fifteen, Part Two.Laws regulating wine end when your blood alcohol level drops below 0.08%, but they start in the vineyard, even before grapes turn into alcohol. Inspired by European appellation wine laws, American wine grape-growing regions fall within demarcated geographic boundaries established by the Alcohol and Tobacco Tax and Trade Bureau (TTB). Before the creation of American Viticultural Area’s (AVA) wine regions were simply designated by county or state. Surprisingly the first AVA, established in 1980, was not in Napa Valley. It was in the Mecca of fine wine production, Augusta, Missouri.